VoLTE White Paper

LTE_Voice_1105_RandSVoice and SMS in LTE White Paper

This white paper summarizes the technology options for supporting voice and short message service (SMS) in LTE, including circuit switched fallback (CSFB), SMS over SGs, and voice over LTE (VoLTE). It includes background information on the standardization process, and the commercial implications for the different options. The white paper also addresses test and measurement requirements resulting from the support of voice and SMS in LTE.

1MA197

C. Gessner, O. Gerlach May 2011 1e

Table of Contents

Table of Contents
1 2 3
3.1 3.2

Introduction ............................................................................ 3 Overview ................................................................................. 3 Circuit switched fallback (CSFB) .........